An explosion at a wedding party just north of Kandahar, Afghanistan, killed at least 40 people and injured more than 70. <br /><br />Hamid Karzai, the Afghan president, said the bombing was an attack against Islam and all of humanity. Karzai blamed the attack on the Taliban, who denied his claims. <br /><br />The victims, including 12 children, are the latest casualties of Afghanistan's ongoing violence.<br /><br />Al Jazeera's James Bays reports from Kabul.